HALIFAX, Nova Scotia (AP) — The top officer at U.S. Strategic Command said Saturday an order from President Donald Trump or any of his successors to launch nuclear weapons can be refused if that order is determined to be illegal. Air Force Gen. John Hyten, commander of Strategic Command, told a panel at the Halifax International Security Forum on Saturday that he and Trump have had conversations about such a scenario and that he would tell Trump he couldn't carry out an illegal strike. "If it's illegal, guess what's going to happen.